157996396799 has 2 divisors, whose sum is σ = 157996396800. Its totient is φ = 157996396798.

The previous prime is 157996396793. The next prime is 157996396813. The reversal of 157996396799 is 997693699751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157996396799 - 2⁴ = 157996396783 is a prime.

It is a super-2 number, since 2×157996396799² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157996396793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78998198399 + 78998198400.

It is an arithmetic number, because the mean of its divisors is an integer number (78998198400).

Almost surely, 2^157996396799 is an apocalyptic number.

157996396799 is a deficient number, since it is larger than the sum of its proper divisors (1).

157996396799 is an equidigital number, since it uses as much as digits as its factorization.

157996396799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1562436540, while the sum is 80.

The spelling of 157996396799 in words is "one hundred fifty-seven billion, nine hundred ninety-six million, three hundred ninety-six thousand, seven hundred ninety-nine".